private unsafe void ProcessFrameOutput(AudioFrame frame)
        {
            using (var buffer = frame.LockBuffer(AudioBufferAccessMode.Read))
            using (var reference = buffer.CreateReference())
            {
                byte* dataInBytes;
                uint capacityInBytes;

                ((IMemoryBufferByteAccess) reference).GetBuffer(out dataInBytes, out capacityInBytes);

                if (capacityInBytes == 0) // Don't send empty frames.
                    return;

                var capacityInFloats = capacityInBytes/4;
                float* dataInFloat = (float*)dataInBytes;

                var floats = new float[capacityInFloats];

                Marshal.Copy((IntPtr)dataInFloat, floats, 0, (int)capacityInFloats);

                var shorts = Float2Short(floats);

                ToxAvModel.Instance.SendAudioFrame(_friendNumber, new ToxAvAudioFrame(shorts, _samplingRate, 1));

                Debug.WriteLine(shorts.Length);
            }
        }

        private short[] Float2Short(float[] inSamples)
        {
            short[] outSamples = new short[inSamples.Length];

            for (int i = 0; i < inSamples.Length; i++)
            {
                float dtmp;
                if (inSamples[i] >= 0)
                {
                    dtmp = inSamples[i] + 0.5f;
                    if (dtmp > short.MaxValue)
                    {
                        dtmp = short.MaxValue;
                    }
                }
                else
                {
                    dtmp = inSamples[i] - 0.5f;
                    if (dtmp < short.MinValue)
                    {
                        dtmp = short.MinValue;
                    }
                }
                outSamples[i] = (short)(dtmp);
            }
            return outSamples;
        }